Loom.



. UNITED I STATES PATENT FFICEEQ eEOEeE F. HUTOHINS, OE WORCESTER, MASSACHUSETTS.

To all whom, it may concern:

Be it known that I, GEORGE F. HUTCHINS, a citizen of the United States, residing at Worcestenin the county of Worcester and.

State of Massachusetts, have invented certain new and useful Improvements in Looms, ofwhich the following is a specificatiom My invention relates to a certain class of looms for making velvet, plush, &c.', in which the fabric is woven double and two shuttles for putting in the filling are-employed which are thrown across the loom simultaneously,

' one traveling on the lay and the other travelj ing on some of the warp-threads. Thedonthe 100m. Each set of said warps is'drawn into two sets of harnesses which are so ar-' ranged and operated as to weave two separate a-ndindependentfabricsat the same ti me, and the harnesses for'the set of warps forming one fabric,,as the top fabric, travel up and down to form a shed for the top shuttle, while the harnesses for the setof warps forming the'other fabric, as the lower fabric, travel up and down to form ashed forthelower shut tle, which shuttle travels'on the lay.

In connect-ion with the warp-threads form-.

ing the body-of the fabric additional warpthreads are .employed to form the pile. The pile-warp threads must be connected with the body-warp threads of each of the two fabrics woven on the loom, and they act to join the two fabrics together upon their inner or contiguous faces to form one fabric until cut apart by a knife attachment, which leaves two. independent fabrics, with the cut pile on the inner face of each.

The pile-warps are ordinarily carried from the pile-warp beam over a guide-rod to a spring-tension-regulating rod and from said rod to the harnesses which control the move- SPECIFICATION forming part of Letters Patent No. 645,525, dated March 1 3, 19 00.

- Application'filed rm 25,1898. s al No. 684,470." (No model.)

ment of the pile-warps in the ordinary way a w in the class of looms above referred to.

It will be understood that the pile-warp harnesses operate to carry a partof the pilewarps into the upper part of the top shedand By reason of the divergence and the difieu apart of them into the bottom part of the ent angles at which'the pile-warps extend when they are in .the two differentlpositions above mentioned there is a slackening of the pile-warps at their intermediate position that is, the distancefro'm this position to the tension-regulating rod is notso great asfrom the other position of the pile-warp threads to the tension-regulatin g rod. To overcome this and have the pile-warps of the same length in the fabric in whatever position the pile-warp harnesses may be, it is necessary that the tension-regulating rod for the pilewarp threads 7 should be moved toward and'away from the cloth-point of the fabric to regulate the ten= sion on thepile-warps.

Heretofore a spring has been used in this 7 class of vlooms above referred to to actuate the tension-rod, so that the movement of the tensio'n-rodfor the pile-warpswas spr'ing-actw ated and therefore was not always moved-to the same position and consequently the length of the pile-warps in .the fabric was likely to vary, accordingto whether the harnesses of the pilerwarps were in one posit-ion at the top and bottom'of the double fabric or in the intermediate position. v

. The objectof my invention is to provide in looms of the class above referred to mechanover which the pile-warps pass,with my mechanism for positively moving the pile-warp tension-regulating rod combined therewith.

1 each end in a slot in the upper end of the arm 8,'having a hub 8, which is fast on a rockshaft 9. s

Extending out from the hub 8' toward the front of the loom is an arm 10, which is connected at its end by a spring 11 witha stationary arm 12, secured to the loom-frame. Extending in an opposite direction to the arm from the hub Sis an arm 13, having alongitudinal slot 13 therethrough. The slotted arm 13 is connected through arod orconnector 14 with an arm 15, having a longi tudinal slot 15 therethrough. The arm 15 s is pivoted on the lower end of a bracket or arm 16, secured at itsupper end 'on theloomframe.

By means of the slots 13: and 15' in the arms 13 and 15, respectively, the point of conwith a pinion 21, fast on a shaft 22, which carries at its opposite end a beveled gear 23, which meshes with a beveled gear 24, fast on the upright driven shaft 25. s i The revolution of the shaft 25 through beveled gears 24 and 23, pinion 21, and gear 19, will communicate motion to the cam 18, and through roll 17, arm 15, connector 14, arm 13, and arm 8 the tension-rod 7 will be moved inwardly and outwardly, the spring 11 acting to keep the roll 17 in contact with the cam 18. It will be seen that when the pile-warps 6 are at the middle position intermediate the bottom and top shed, as shown in the drawing, the tension-rod 7 will be at its rearward position, brought there and held there by the cam 18 acting on the roll 17, and when the pile-warp threads 6 are in the top and botarm and rock-shaft. q

2. Ina loom for weaving velvet, plush, &c., the combination of a rock-shaft,arms contom sheds the tension-rod 7 will be at its forward position, the shape and revolution of the cam 18 being so regulated as to bring the roll 17 on the lowest part of the cam at this time.

On the cam 18 (shown in thedrawing) there is one high portion and one low portion, said cam being of eccentric'shape, and therefore a single revolution of said cam will cause the tension-regulating rod 7 to be moved once into its forward position and once into its rear position. Therevolution of the cam 18 is so timed as to cause one revolution of said cam for every two picks of the loom.

The operation of my mechanism for positively moving the tension-regulating rod at the proper time will be readily understood by those skilled in the art.

The details of construction of some of the parts of my mechanism may be varied, if desired, and instead of mounting the operating mechanism abovethe tension-regulating rod, as shown, it may, if desired, be mounted be.-

low it or in some otherposition.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

i 1. Ina loom for weaving velvet, plush, &c.,

nected to said second arm and tending ton'ormally turn the rock-shaft in one direction, and means for moving the rock'-shaft against the tension of said spring, comprising a-cam,

a pivoted arm carrying a roll traveling on said camand a rod connecting the pivoted nected thereto and carrying a tension-regulating rod for the pile-warps, a second arm carried by the rock-shaft,a spring acting on said arm to normally turn the rock-shaft in one direction, and means for turning the rockshaftagainst the tension of said springcom thereof.

GEORGE F. I-IUTCHINS. Witnesses:

J. O. DEWEY, M. J. GALVIN. 

